Valve-rotating device



Mar. 3,

W. G. BUCK VALVE ROTATING DEViGE Filed June 5. 1918 Inga 1 5 2300070?Patented Mar. '3, 1925.

,w t yrnn G, JBIIQKh carnal mun vee rree smerevm Application; filedJune; 5, 1918. Serial N0.;g38;276;

T 0 all; whom it may. concern citizen of the U11itecl States,residing/at :Fremonhinthe county of Dodge and state of Nebraska, haveinvented certain new and useful Improvements in :Valve-Rotating:Devices, of which-the tol-lowingnis arspecification.

2,, looking in the direction ofsithe arrows; Beitkno-wnthatLWVmMEnG.1313011 3 rand The present invention relates to axdevice' The objectsof; theinventionhare, topro- .vide a. portion iaflixcdvtoethe. valvestemand a portion looseon the valveistem hut: connected to .saidiafiixedportion. .so ithat both 1.

portions. move with the valve stem to; .pro-

tween the portion afiixed .to:'. the .valVe :stem andv the portion looseon. the 's'temihandto ime part a an oscillating .rfotative.movementtolthe loose. portion 1 as i. it linoves with ithe valve stem,said clutch mechanismuiexertingwa rlutchin g.v action 3 when. the loose1 portion is rotated in one. direction, thereby. rotating :the affixedportion and valve, stem and, eX-

erting a non-clutchingiactionewhenithis rotated in I the n oppositedirection, W hGI'GbYrIIO rotative movement is Vimpartedatoi the affixedportion and valve stem.

.A further object} of the invention is to Figure 2 isa11...enlargedsection through the rotating mechanism;

Figure 3 is a section on line 33 of Fig.

Figure't is an under face view -oti the rotating mechanism, showing; theconnection 7 between said mechanism and the valve stem.

ReferringLnoW: to the drawings jthe device is illustrated in connection{with a gas en-- gine structure 5,- which may be -of any: suitable styleand character. -ISa-id-structure as illustrated disolo'sesgthe usualpiston 6, to

avhichxis connected at pistonwrod 'f, oinedlto a crank shaft (not-ishown) tilocamyshaft 8 .is illuStrated; lIZIVlIIgQthGIBOII cam members9,rwhichcosoperate "with tappets- :10 to raise ment.

and lower the valve steinszand usual manner.

"The valve illustrated comprises a vvalve valves in the stem 11terminating ina valvehead or memr.ber.12, andrisof the usualpn'ppettypefand may be employed for controllingoeitherthe inlet orexhaust openingsof: the 1 engine. A bushing ,13 is. shown,. which. is:formed .at its =.upper end ;.with U a flange .14, notched; as A at .videa one-wayacting clutch mechanism bel5; .andiengaging Witlr the walls of;the notch Lsaidibushing is held against rotative lmove- .A.;.sleeve :17t1s.;provided,.which is Yformed ,iwith outwardly extendmgllugs or Lknobsl8 iWhich. travel iivitliin helical slots 19; in the bushing 13.

1 The-sleeve 17 aszwill. bei secn fromili igh 2, terminates in a,holloWfhead 20,",and on the lower ,end of said headiis an loutwardlvextending flange 21. Engaging with .tlie flange 3-21 is a cap-22 whichisiseatedor ,iotherwise .iaflixed to a 1111 1 23, having; there/urea;ball- ,race24. This. arrange thesaid clutch device. .in; auhouslnglocated at the ,lowersend of;the waived-stein,

halls-a e.icooperates.aVith a ball race 25 in a collalp26, and {thenaces24. an 2 1 1 11 nihearlng lace to;,i;e, ;cive suitable bearings 27;

llhe collar 26 is formed on, its; ,un der face A with an elongatedrecess 28,;within. ,which l li s.- a pin iorikey 2 exte ding thtoughz aopening in the valve stem. In allstandard valve constructions, this keyand opening is present in the stem so that. the A rotating de- 7 vice ofit the present invention can be ap- 1 plied vjtoany tormiofqvalvewithout any alteration therein, theikey e29 torming the sole means forsecuring and maintaining-allot the. rotatin parts in proper.positio'niwith respect to the stem.

Extending upward from the collar 26 is a neck 30 (see Fig. 2), and saidneck, as shown, is flattened as at 31 (see Fig. 3) on one or more sidesto receive a. notched disk 32. The opening through the disk is fiattenedin accordance with the flattening of the neck 31, and thus the disk isat all tunes rotatable with said neck. This disk lies within the hollowhead 20 of the sleeve .17, and positioned between the face of thenotches in said disk and the inner wall of the hollow head are rollers33.

Assuming the tappet to be operating to force the valve upward, thecollar 26, ring 2?), cap 21, head 20, sleeve 17 and lugs 18 will becarried upward therewith. In fact, all portions of the rotatingmechanism, with the exception of the bushing 13, will be moved in unisonwith the valve stem. By

reason of the lugs 18 traveling in the heli cal slots 19, a rotativemotion in the direction of the arrow (see Fig. 3) will be imparted tothe sleeve 17 and head 20. This rotative motion will act to move therollers in such manner as to cause them to wedge between the face of theteeth of the disk 32 and the inner wall of the head 20, and thus arotative movement will be transmitted to the disk 32, and thence to theneck 30, collar 26, and through the pin 29 to the valve stem 11, whichwill impart a rotating motion to the valve.

After the tappet releases, a spring 3% will tend to move all of therotative mechanism,

except the bushing 18, together with the clutch within said chamber forimparting valve stem and valve, in a downward direction; and when movingin such direction, the sleeve 17 will be rotated in the reversedirection from that in which it was previously rotated, owing to thefact that the lugs 18 are traveling downward in the slots 19, and so onthe downward movement the head 20 will be revolved in a directionreverse to that of the arrow in Fig. 3. This will tend to move therollers 32into the position shown in Fig. 3, wherein they will be at thedeepest portion of the notch in the disk 32 and will be in a non-wedgingposition with respect to the face of said notches. and the inner wall ofthe head 20. They will therefore effect no clutching engagement betweenthe head and the disk 32, and thus on the downward movement no rotativeaction will be imparted to the valve stem, and it and the valve willreturn to seated position with a straight-line movement.

It is understood that although the head 20 is held in place by the cap22, so that it is moved in unison with the movements ofthe valve stem,nevertheless, it has a turning movement with respect to said cap andwith respect to the ring 23.

Although the device has been described with considerable particularity,it is not deemed to be limited other than may be by the terms of theappended claims.

I claim:

1. In a device of the class described, the combination of areciprocating valve stem having a valve member thereon, a sleevesurrounding said stem and loose thereon, said sleeve terminating in ahollow head at the lower end thereof, a collar afliXed to the valvestem, and having a part thereof extending within the hollow head of thesleeve, a connection between the collar and sleeve causing them to moveback and forth simultaneously as the stem reciprocates, means forimparting an oscillating rotative movement to the sleeve as it movesback and forth, and a one-way acting clutch serving to impart rotativemovement fro-m the sleeve to the collar and thence to the valve stemonly as a the sleeve rotates in one direction, substantially asdescribed.

2. In combination with a reciprocating valve stem having avalve'memberthereon,

a member affixed to the lower end of the stem, a member loose upon thestem and ciprocating movement to said loose member as it moves back andforth, said members being formed to provide a chamber at their point of1uncture, and a one-way acting rotative movement from said loose member3. In combination with a reciprocating.

valve stem having a valve member thereon, a collar aifixed to the lowerend of the stem, a sleeve loosely mounted on the stem above the aifixedmember, a connection between the collar and sleeve whereby they moveback and forth in unison with the stem, means for imparting anoscillating reciprocating movement to the sleeve as it moves back andforth, a neck extending from said collar, a chambered head extendingfrom said sleeve and arranged concentric with said neck and spaced awaytherefrom, a one-way acting clutch mechanism interposed between the neckand the interior of the head, whereby rotative movement is transmittedfrom said sleeve to said neck and thence through the collar to the valvestem only while the stem, collar and sleeve are moving in one direction,substantially as described.

